NIFRS said it was the busiest Halloween in six years with a 47% rise in the number of calls compared with last year.

Most of the 166 incidents attended by firefighters were started deliberately. Many involved grassland and bonfire materials including tyres.

A total of 232 calls were received from across the region.

An NIFRS spokeswoman said: "This equates to an increase of 47% on incidents attended during Halloween 2015 and represents the busiest Halloween period since 2010 in terms of both calls received and mobilised incidents."